Just stick a fork through the marshmallow, being careful not to stab through the bottom. Then toast slowly over high heat, browning evenly on all sides, you can use a gas stove to brown the marshmallows. When the mallow’s perfectly browned (and you’ve sent a few flaming mallows sailing down your gullet), set it on a plate to cool. The marshmallow will naturally sink in on itself.
Then fill the cavity with your favorite liquor. We recommend Bailey’s or Kahlua for a sweet dessert treat, but feel free to play things up and try something new.
Oh, and make sure to toss the shot back as soon as you pour it! Otherwise you’ll be left with a soggy marshmallow and no booze (and nobody wants that).